About

This site holds the written solutions behind the secondalmighty YouTube channel: math (maths) problems, each worked step by step, for students anywhere in the world. We use the words Grade 9-12 (US and others), Year 10-13 (UK and others) and Class 10-12 (India) side by side, because the topics are the same.

The topics line up with what students meet in GCSE and IGCSE, SAT and AMC, AP and IB, and CBSE, ICSE and JEE-style practice. We are not affiliated with any exam board.

If you find a mistake, please tell us in the comments on the matching video and we will fix it.